# US 2020/0403168 A1 · Organic light-emitting diode display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0403168 A1 - Document ID: US20200403168A1 - Status: Published application - Kind: A1 - Application number: 16/497,446 - Filed: 2019-08-15 - Published: 2020-12-24 - Earliest claimed: 2019-05-30 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Wenqi LI - Web page: https://patentgrep.com/patent/US20200403168A1 ## CPC - H10K 59/65: OLEDs integrated with inorganic image sensors - G06V 40/1318: {using electro-optical elements or layers, e.g. electroluminescent sensing} - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/126: Shielding, e.g. light-blocking means over the TFTs - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 77/10: Substrates, e.g. flexible substrates - H10F 39/198: {Contact-type image sensors [CIS]} - H10K 59/40: OLEDs integrated with touch screens - H10W 90/00: Package configurations - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An organic light-emitting diode (OLED) display panel and a display device are provided. The OLED display panel includes a substrate, a driving circuit layer formed on a side of the substrate, a light-emitting material layer formed on a side of the driving circuit layer away from the substrate, a sensing unit formed on another side of the substrate away from the driving circuit layer and configured to receive light reflected by a fingerprint surface. In a fingerprint identifying region of the OLED display panel, the substrate includes a through hole, and the light emitted from the light-emitting material layer and reflected by the fingerprint surface travels through the through hole and arrivals the sensing unit. ## Claims ### Claim 1 An organic light-emitting diode (OLED) display panel, comprising: a substrate; a driving circuit layer formed on a side of the substrate; a light-emitting material layer formed on a side of the driving circuit layer away from the substrate; and a sensing unit disposed on another side of the substrate away from the driving circuit layer and configured to receive light reflected by a fingerprint surface; wherein in a fingerprint identifying region of the OLED display panel, the substrate comprises a through hole, and the light emitted from the light-emitting material layer and reflected by the fingerprint surface travels through the through hole and arrivals the sensing unit. ### Claim 2 (depends on 1) The OLED display panel as claimed in claim 1, wherein in the fingerprint identifying region, the driving circuit layer is unpatterned. ### Claim 3 (depends on 2) The OLED display panel as claimed in claim 2, wherein in the fingerprint identifying region, the substrate comprises a plurality of first through holes that are not in contact with each other. ### Claim 4 (depends on 3) The OLED display panel as claimed in claim 3, wherein in the fingerprint identifying region, the substrate comprises a central region and a peripheral region, and the peripheral region surrounds the central region, and a density of the first through holes in the central region is greater than a density of the first through holes in the peripheral region. ### Claim 5 (depends on 3) The OLED display panel as claimed in claim 3, wherein the plurality of first through holes are disposed at equal distances from each other. ### Claim 6 (depends on 3) The OLED display panel as claimed in claim 3, wherein the OLED display panel further comprises a protection layer disposed on the another side of the substrate away from the driving circuit layer, and in the fingerprint identification region, the protection layer comprises a plurality of second through holes which are in one-to-one correspondence with the first through holes. ### Claim 7 (depends on 2) The OLED display panel as claimed in claim 2, wherein in the fingerprint identification region, the substrate comprises a third through hole. ### Claim 8 (depends on 7) The OLED display panel as claimed in claim 7, wherein the OLED display panel further comprises a protection layer disposed on the another side of the substrate away from the driving circuit layer, and in the fingerprint identification region, the protection layer comprises a fourth through hole corresponding to the third through hole. ### Claim 9 (depends on 1) The OLED display panel as claimed in claim 1, wherein the driving circuit layer comprises a gate layer, a source and drain layer, and a signal line layer, and in the fingerprint identifying region, the driving circuit layer is patterned to form a fifth through hole, and the substrate comprises a sixth through hole, and the light emitted from the light-emitting material layer and reflected by the fingerprint surface travels through the fifth through hole and arrivals the sixth through hole and the sensing unit according to a pinhole imaging theory. ### Claim 10 (depends on 9) The OLED display panel as claimed in claim 9, wherein the fifth through hole is formed with the gate layer. ### Claim 11 (depends on 9) The OLED display panel as claimed in claim 9, wherein the gate layer comprises a first gate layer and a second gate layer, and the fifth through hole is formed with the first gate layer. ### Claim 12 (depends on 9) The OLED display panel as claimed in claim 9, wherein the gate layer comprises a first gate layer and a second gate layer, and the fifth through hole is formed with the first gate layer. ### Claim 13 (depends on 9) The OLED display panel as claimed in claim 9, wherein the fifth through hole is formed with the source and drain layer. ### Claim 14 (canceled) ### Claim 15 (depends on 9) The OLED display panel as claimed in claim 9, wherein the OLED display panel further comprises a protection layer disposed on the another side of the substrate away from the driving circuit layer, and in the fingerprint identification region, the protection layer comprises a seventh through hole corresponding to the sixth through hole. ### Claim 16 A display device comprising an organic light-emitting diode (OLED) display panel, wherein the OLED display panel comprises: a substrate; a driving circuit layer formed on a side of the substrate; a light-emitting material layer formed on a side of the driving circuit layer away from the substrate; and a sensing unit disposed on another side of the substrate away from the driving circuit layer and configured to receive light reflected by a fingerprint surface; wherein in a fingerprint identifying region of the OLED display panel, the substrate comprises a through hole, and the light emitted from the light-emitting material layer and reflected by the fingerprint surface travels through the through hole and arrivals the sensing unit. ### Claim 17 (depends on 16) The display device as claimed in claim 16, wherein in the fingerprint identifying region, the driving circuit layer is unpatterned. ### Claim 18 (depends on 17) The display device as claimed in claim 17, wherein in the fingerprint identifying region, the substrate comprises a plurality of first through holes that are not in contact with each other. ### Claim 19 (depends on 17) The display device as claimed in claim 17, wherein in the fingerprint identification region, the substrate comprises a third through hole. ### Claim 20 (depends on 16) The display device as claimed in claim 16, wherein the driving circuit layer comprises a gate layer, a source and drain layer, and a signal line layer, and in the fingerprint identifying region, the driving circuit layer is patterned to form a fifth through hole, and the substrate comprises a sixth through hole, and the light emitted from the light-emitting material layer and reflected by the fingerprint surface travels through the fifth through hole and arrivals the sixth through hole and the sensing unit according to a pinhole imaging theory.